As a result of the action illustrated in the figure,
a. structural genes are transcribed.
b. lactose is broken down.
c. the lactose operon is repressed.
d. the regulatory gene is inactivated.
e. lactose production is enhanced.
Answer: c
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Which of the following factors likely did NOT contribute to the evolution of distinctive human characteristics relative to Great Apes?
A. alteration of developmental timing so that certain juvenile characteristics are retained in the sexually mature adult B. the evolution of bi-pedalism followed by evolutionary modifications to the skull, pelvic structure, foot and legs C. the evolution of bi-pedalism followed by increasingly sophisticated tool use, cognitive ability, and social organization D. the evolution of the FoxP2 gene associated with more sophisticated language E. the evolution of opposable thumbs followed by increasingly sophisticated tool use
Reef-building polyps get their sugars from
mutualistic
a. green algae. b. cyanobacteria. c. dinoflagellates. d. euglenoids. e. planarians
In the light-dependent reactions of photosynthesis, how do hydrogen ions get back into the stroma?
a. passive diffusion directly across the thylakoid membrane b. active transport across the thylakoid membrane c. facilitated diffusion across the thylakoid membrane d. active transport through ATP synthase e. passive diffusion through ATP synthase
Under standard conditions, ATP can release _______ for every molecule converted to ADP.
A. 1 to 2 cal of energy B. different amounts of energy depending on the cell C. 7.3 Kcal of energy D. less than 1 cal of energy